1. Pamir Collaboration, Abstracts of Papers, 4th ISVHE-CRI, Beijing, 1986, p. 429.
2. Kopenkin, V.V. et al., Phys. Rev. D: Part. Fields, 1995, vol. 52, no. 5, p. 2766.
3. Mukhamedshin, R.A., J. High En. Phys., 2005, vol. 5, p. 49.
4. Mukhamedshin, R.A., Abstracts of Papers, 8th ISVHE-CRI, Tokyo, 1994, p. 57.
5. Smirnova, M.D. and Smorodin, Yu.A., Abstracts of Papers, 21th ICRC, Adelaide, 1990, vol. 8, p. 310.